[Readme] Updates installation instructions.
[Readme] Updates installation instructions.

RiuHDuo/FunctionalReactivePixels,sandyway/FunctionalReactivePixels,fxd/FunctionalReactivePixels,ashfurrow/FunctionalReactivePixels,hbucius/FunctionalReactivePixels,ManagerOrganization/FunctionalReactivePixels